How to clean old gas tank?

[Pecker]

Hey guys,

I have a Toro WB that sat for a while (previous owner). It runs great and all but I see varnish collecting in the fuel filter. I really think I should clean out the gas tank and am wondering how to do it.

I plan on draining all the fuel and then taking the tank off.

What chemicals should I use?

What is that stuff that yer supposed to put in it that has rocks in it and then shake it all around to loosen the gunk and varnish?

Any advice welcome. Thanks.

[vipermanz]

is the tank metal or plastic?

[Pecker]

Its a plastic tank. About 5 gallons big.

[vipermanz]

empty it out, take it off, put about 24oz of carb cleaner in it(you can get non aerasol by the gallon from autozone etc.) shake it up every 10 min. for maybe an hour, empty it out, reattach.

thats how i would do it

[Pecker]

Ok. Thank you Vipermanz.